[Ovmsdev] OVMS v3.3 hardware

Alexander K alexander.kiiash at gmail.com
Tue Aug 17 15:56:39 HKT 2021

Hello all.
I had very noisy readings of the 12v ADC. I tried to play with calibration
values, but no luck with it. Eventually I have connected 0.1 µF capacitor
to the ADC input, like described at "Minimizing Noise" article:
It might be worth considering this modification for the next hardware

вт, 17 авг. 2021 г. в 08:31, Mark Webb-Johnson <mark at webb-johnson.net>:

> For the 4G modem options we need to go through FCC, CE, and ROHS
> certification. Minimising/eliminating the changes to the main board
> simplifies this (and brings down the exorbitant costs) but if there is
> anything urgent / necessary, now is the time to do it.
> The goal here is to maintain 100% compatibility with existing OVMS main
> boards, to keep this is a simple and relatively cheap upgrade of the modem
> board.
> So far, I have come up with this minimal list:
>    1. Main board v3.3: Improve soldering of micro USB port. Bigger solder
>    pads, and more solder to secure it better.
>    2. Modem board v1.3: Add support for SIM7600 module.
>    3. Modem board v1.3: Fix support for DTR sleep/awake support.
> Is there anything else required for this update?
> Regards, Mark.
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